Elmer Cat

Research Scientists

Postdoctoral Scholars


Benjamin Balas

Kimo Johnson

Aude Oliva


Recent Alumni

Shayian Keshvari

Jianhua Li

Benjamin Wolfe

Siyuan Dong

Shaoxiong Wang

Dian Yu

Wenzhen Yuan

Zhendong Zhang

Bei Xiao

Krista Ehinger

Xuetao Zhang

Derya Akkayanak

Phillip Isola

Rui Li

All Alumni

The Perceptual Science Group of the Department of Brain and Cognitive Sciences at MIT does research in human vision, machine vision, human-computer interaction, and touch sensing for robotics. Both the Adelson Lab and the Rosenholtz Lab are part of the Computer Science and Artificial Intelligence Lab (CSAIL), located in the Stata Center.


  • Hello world!

    Welcome to WordPress. This is your first post. Edit or delete it, then start writing!

  • Benny Goodman ft. Peggy Lee – Why Dont You Do Right (Gramophonedzie)

  • RGB LED Flexible Strip Lighting Effects on Food Colors – Elmer’s Disco Kitchen

    [youtube http://www.youtube.com/watch?v=vgHAJCpQacc?rel=0]

  • Revere Beach Sandsculpture Festival / Friday Evening – July 13th 2012

    [youtube http://www.youtube.com/watch?v=lrrAQRgeFs0?rel=0]

  • Joshua’s Hydration Calculator


  • Soundcloud Player Prax Page

    This page has examples of the different Soundcloud players, along with the code used for each player. A list of supported parameters for player options is at the bottom of the page, but not all parameters work with every player.

    Soundcloud Mini Player

    [sourcecode wraplines=”true” light=”true”]


    Soundcloud Artwork Player

    [sourcecode wraplines=”true” light=”true”]


    Soundcloud Standard Flash Player

    [sourcecode wraplines=”true” light=”true”]


    Soundcloud HTML5 Player

    [sourcecode wraplines=”true” light=”true”]



    Not all parameters work with every kind of player.

    color hex code Color play button and other controls. e.g. “0066CC”
    theme_color hex code Color player background etc.
    text_buy_track String e.g. Tweet and it points to your buy link
    text_buy_set String e.g. Tweet and it points to your buy link
    text_download_track String e.g. Get it and it points to your download link
    buying true/false Show/Hide buy buttons
    sharing true/false Show/Hide share buttons
    download true/false Show/Hide download buttons
    show_bpm true/false Show/Hide bpm display in player
    show_playcount true/false Show/Hide number of track plays
    start_track Number A number from 0 to the playlist length. preselects a track in a playlist
    default_width Number A number e.g. 400. Overrides the player’s autoscale, useful when embedding in other flash movies
    default_height Number A number e.g. 500. Overrides the player’s autoscale, useful when embedding in other flash movies
    font String A string e.g. “Arial”. Overrides the default font with system font
    enable_api true/false Enable the JavaScript API callbacks
    single_active true/false if set to false the multiple players on the page won’t toggle each other off when playing
    show_user true/false Show or hide the uploader name, useful e.g. in tiny players to save space)
    auto_play true/false
    show_artwork true/false
    show_playcount true/false
    show_bpm true/false
    show_comments true/false


  • Owen Murphy Lady

    Owen Murphy Lady

    New York Telephone Standard Voice

    In the 1960’s, New York Telephone had an excellent “standard voice” for all of their recorded announcements. Unfortunately, I don’t know what her real name was, but it is known that she worked for the Owen Murphy production company. Evan Doorbell’s “Sounds of Long Distance – Part 6” includes a master copy of the vacant code recording which was sent to central offices throughout the state:

    Vacant Code Recording

    I’m sorry, we are unable to complete your call as dialed. Please check the number and dial again, or ask your operator for assistance. This is a recording.

    (to replay, click the X)

    I always loved her musical voice, and place it only second to the great Jane Barbe. Besides the “vacant code” recording, she did beautiful versions of “all circuits busy”, “machine intercept” and of course, her legendary “permanent signal” recording:

    All Circuits Busy Recording

    I’m sorry. All circuits are busy now. Will you try your call again later, please? This is a recording.

    (to replay, click the X)

    Call Did Not Go Through Recording

    I’m sorry. Your call did not go through. Will you please hang up and try again? This is a recording.

    (to replay, click the X)

    Machine Intercept Recording

    I’m sorry. The number you have reached is not in service or temporarily disconnected. The number you have reached is not in service at this time. This is a recording.

    (to replay, click the X)

    There appears to be a receiver off the hook!

    Permanent Signal Recording

    This is a recording. Please hang up. There are penalties for leaving appears to be a receiver off the hook. Please check your main telephone and extension. Then try your call again. Thank you.

    (to replay, click the X)

    Movie Appearance – “The Town and the Telephone”

    Though I don’t know her name, I believe I do know what she looked like. An old Bell System promotional film entitled “The Town and the Telephone” produced by the Owen Murphy company features a short clip of a woman calling Directory Assistance Information to get the new number of Wilson’s meat market:

    The new number is WRight-5-6240

    The movie has no credits for the actors, but she certainly sounds like the same voice, don’t you think? Here’s a mash-up of New York Telephone recordings against the movie clip as an additional comparison:

    The new number is WRight-5-6240?

    At first that number seemed odd to me; the Phone Company typically used “555” (e.g.: KLondike-5) for fictitious phone numbers in movies or on TV, so as to avoid anyone’s real phone number getting flooded with nuisance calls. The exchange name “WRight” would also be prone to misdials (e.g.: RIght-5) if used for a real-life central office. However, a recent post by the famous telephone (and movie) historian, Mark Cuccia, explains that before they settled on “555”, a few other prefixes were also specifically not assigned to subscribers including “975” (WRight-5).

  • PBX Operating

    My dad worked for a hotel; for many years he was the chief engineer who kept everything working. Years before, my uncle Norm was the manager there; my grandmother had worked there for a while; both of my sisters worked there at one time or another; and of course, I would eventually work there too.

    When I was in third grade my sister, Susie, was working the front desk on Thanksgiving Day. My mom packed up a plate of food for her, and I brought it downtown to her on the Fifth Avenue bus. I was immediately enthralled by the switchboard, a Western Electric Model 551. The hotel wasn’t very busy on Thanksgiving, so Susie taught me how to run the switchboard!

    I was just eight years old, but because I was so fascinated by the switchboard, I learned it very quick and soon could run the board better than the regular front desk staff (who basically hated the switchboard to begin with). Most of them were very happy to let me play with the switchboard while they took a break. That was nearly fifty years ago, and is just the very beginning of what became a diverse PBX operating career that spanned decades.

  • Revere Ware Pressure Cooker

    Henry likes seeing his pretty reflection in my shiny “new” vintage Revere Ware pressure cooker.

  • Boston Pride Block Party St. James – June 10, 2012

    A perfect day for dancing in the streets!